Waltheb vielhabee



(No Modem W. IELHAB R.

SHAFT GOUPLING.

No. 288,746. Patented Nov. 20, 18-83;

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UNITED STATES PATENT ()FFICE.

WALTHER VIELHABER, OF ALTOONA, PENNSYLVANIA,

SHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 288,746, dated November20, 1883,

Application filed July 30, 1883. (No model.)

To aZZ whom it may concern Be it known that I, WALTHER VIELHABER, ofAltoona, in the county of Blair and'State of Pennsylvania, have inventedcertain new and useful Improvements in Shaft-Couplings, of which thefollowing is a specification.

This invention has reference to an improved shaft-coupling, which isespecially designed for coupling shafts of smaller diameter in a simple,strong, and reliable manner; and the invention consists of an exteriorcylindrical portion,and an interior spring-sleevethatis transverselysplit at about its middle, and provided with abutments at its ends, intowhich taperin g screw-bolts or other suitable wedge-shaped pieces areinserted for spreading the abutments apart and securing thespring-sleeve tightly to the shafts to be coupled.

In the accompanying drawings, Figure 1 represents a vertical transversesection on line 00 00, Fig. 2, of my improved shaft-coupling. Fig. 2shows an end view of the same, and Figs. 3 and 4 are vertical transversesec tions of modified forms of my shaftcoupling.

Similar letters of reference indicate the corresponding parts.

Referring to the drawings, A represents the cylindrical exterior portionof my improved shaft coupling, and B an interior spring sleeve, which iseither cast in one piece with theexterior cylinder or cast separatelyand attached to the same by a dovetail joint or otherwise, as shown, forinstance, in Fig. 3.

The end of the sleeve B is provided with a shoulder or abutment, b,between which and an overlapping abutment, a, that is cast integral withthe opposite end of the. springsleeve B, or integral with the cylinderA, the

tapering screw-bolts O G are introduced.

around the ends of the shafts to be coupled,

whereby they are firmly connected with each other. v

The spring-sleeve B is split transversely at (1, so that the twosections formed thereby respond independently of each other to thepressure of the tightening screw-bolts. The exterior cylindricalportion, A, is extended at both ends beyond the spring-sleeve and thesquare heads of the screw-bolts, so as to avoid accidents, which arefrequently caused by the projecting parts of shaft-couplings.

The spring-sleeve Bis splined to the shafts, by means of a key, 6, andgroove, 6, at a point diametrically opposite, or nearly so, to the openends of the spring-sleeve B,the thickness of which is correspondinglyincreased at that point, as shown at 6 Fig. 2..

By means of this coupling shafts of slightly different sizes can beconnected, as each section of the spring-sleeve B can be tightenedindependently of the other, and one of the bolts 0 being screwed home alittle more into its seat, so that the corresponding sleevesection willhold a slightly smaller shaft.

WVith this shaft-coupling shafts can be connected in the followingmanner: The bolts 0 are loosened sufficiently to allow the coupling toslide upon one of the shafts. The other shaft is then placed in positionso that the ends of the shafts are at or near the center of thecoupling. The bolts 0 are then tightened and the splines driven intotheir seats at the ends of the shafts.

This coupling can be cheaply manufactured, as the only partswhich-require to be worked off are the interior surface of thespringsleeve B and the sockets for the screw-bolts 0, all other partsremaining as they come from the casting.

Having thus described my invention, I claim as new and desire to secureby Letters Patent In a shaft-coupling, the combination of an exteriorcylindrical shell, an interior cylindrical spring-sleeve having a narrowlongitudinal opening through the length of its shell, the shoulder b,the overlapping abutmenta, the screw-bolts CO, the spline c, and groove0, the said shell and sleeve being cast g in one piece or attached bymeans of a dovetail joint, substantially as and for the purpose setforth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

WALTHER VIELHABER.

Witnesses:

FREDRIK H. SOHEFFER, WILLIAM AHLEN.

